Is it normal to have brown discharge after 5 days of prescription provera to induce a period? it changes from brown then red (mid afternoon) back to brown?

Brown color indicates old blood and could be part of an induced period. Best is to reconsult the prescriber who knows your findings

The reason for prescribing Provera is usually to effect a shedding of the uterine lining, which is what the "brown discharge" represents. Ask your GYN physician about low dose oral bcp's, which will stop ovarian hormonal activity, treating the irregularity of menstruation now providing an occasion for Provera.